Deuteronomy 32:46-48

46 he said to them, [BE] Take to heart all the words that I am giving in witness against you today, words you should command your children, that they may observe carefully every word of this law.

47 For this is no trivial matter for you, but rather your very life; by this word you will enjoy a long life on the land you are crossing the Jordan to possess. [BF]

48 On that very day the Lord said to Moses,